/**
 *    Copyright (c) 2011-2014, OpenIoT
 *   
 *    This file is part of OpenIoT.
 *
 *    OpenIoT is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU Lesser General Public License as published by
 *    the Free Software Foundation, version 3 of the License.
 *
 *    OpenIoT is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public License
 *    along with OpenIoT.  If not, see <http://www.gnu.org/licenses/>.
 *
 *     Contact: OpenIoT mailto: info@openiot.eu
 */

package org.openiot.ui.request.presentation.web.scopes.session;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.context.FacesContext;

import org.openiot.ui.request.presentation.web.scopes.session.base.DisposableContext;
import org.openiot.ui.request.commons.logging.LoggerService;

/**
 *
 * @author Achilleas Anagnostopoulos (aanag) email: aanag@sensap.eu
 */
@ManagedBean(name = "sessionBean")
@SessionScoped
public class SessionBean implements Serializable {
	private static final long serialVersionUID = 1L;

    private Map<String, DisposableContext> contextMap;
    private String userId;

    /**
     * Creates a new instance of SessionBean
     */
    public SessionBean() {
        contextMap = new HashMap<String, DisposableContext>();
    }
    
    public String getUserId(){
    	return userId;
    }
    
    public void setUserId(String userId) {
		this.userId = userId;
	}

	//------------------------------------
    // Context API
    //------------------------------------
    public DisposableContext getContext(String contextName) {
        if (contextMap.containsKey(contextName)) {
            return contextMap.get(contextName);
        }

        return null;
    }

    public void purgeContext(DisposableContext context) {
        if (contextMap.containsValue(context)) {
            for (Map.Entry<String, DisposableContext> entry : contextMap.entrySet()) {
                if (entry.getValue().equals(context)) {
                    contextMap.remove(entry.getKey());
                    LoggerService.log(Level.FINER, "SessionBean: purged context '" + entry.getKey() + "' of type " + entry.getValue().getClass().getSimpleName());
                    return;
                }
            }
        }
    }

    public void registerContext(DisposableContext context) {
        if (contextMap.containsValue(context)) {
            LoggerService.log(Level.FINER, "SessionBean: overwriting old context '" + context.getContextUID() + "' of type " + context.getClass().getSimpleName());
        }
        contextMap.put(context.getContextUID(), context);
        LoggerService.log(Level.FINER, "SessionBean: registered context '" + context.getContextUID() + "' of type " + context.getClass().getSimpleName());
    }

    public String addToFlashScopeAndRedirect(String key, String value, String redirectTo) {
        FacesContext.getCurrentInstance().getExternalContext().getFlash().put(key, value);
        return redirectTo;
    }

    public Map<String, DisposableContext> getContextMap() {
        return contextMap;
    }

}
